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arXiv · 1005.4001

On meson dominance in the `second class' tau \to eta pi nu_tau decay

N. Paver·Riazuddin
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Abstract

Motivated by recent estimates of the isospin-violating process tau \to eta pi nu_tau, mostly relying on the rho and a_0 dominance of the relevant form factors near threshold, we present an assessment for the branching ratio that accounts for additional, potential, effects from the lowest radial excitations rho(1450) and a_0(1450), respectively, also lying in the decay phase space.

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N. Paver, Riazuddin. 2010-05-21. On meson dominance in the `second class' tau \to eta pi nu_tau decay. https://doi.org/10.1103/physrevd.82.057301

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